exc: ch7/*.cpp
	g++ -o exc ch7/inline_oper.cpp
index: ch6/*.cpp
	g++ -o index ch6/stringIndex.cpp
string: ch6/string_use.cpp
	g++ -o string ch6/string_use.cpp
template: ch10/template_*.cpp
	g++ -o template ch10/template_1.cpp
	
fio: ch20/*.cpp
	g++ -o fio ch20/operator.cpp